Motor Protection Circuit Breakers

Motor protection circuit breakers act as protection devices for electric motors, monitoring the electrical supply in motor circuits of 50-60Hz. They protect against phase unbalances and losses, which are detrimental to motors, offer protection against current overload, and prevent short circuits.


What are motor protection circuit breakers used for?

Motor protection circuit breakers are useful in industrial and building applications such as chillers, compressors, heat pumps and cooling towers, to prevent damages from short circuits or power surges. In the manufacturing industry, circuit breakers interrupt electrical faults below the breaking capacity, which protects machinery and equipment from blowouts.


Types of motor protection circuit breakers

Motor protection circuit breakers come in A type or B type classifications, dependent on utilisation and function.


The A type breaker is not explicitly intended for selectivity and does not allow intentional short time delay under short circuit conditions.This means that the system interrupts immediately when current or voltage levels match the breaking capacity.


Type B breakers allow for an intentional and adjustable short time delay under short circuit conditions, which enables the system to continue for a short while with currents exceeding breaking capacity levels.


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Omschrijving Prijs Current Range Number of Poles Range Breaking Capacity Terminal Type Voltage Rating Reset Method Length Width Depth Dimensions For Use With Series
RS-stocknr. 866-1307
FabrikantnummerXTPR6P3BC1
FabrikantEaton
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136,17 €
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24 → 32 A 3P TeSys 3 kA Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-stocknr. 351-5533
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FabrikantAllen Bradley
240,00 €
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32 → 45 A - - 65 kA Screw 575 V - 110mm 54mm 109.5mm 110 x 54 x 109.5 mm - 140M
RS-stocknr. 706-1762
Fabrikantnummer3RV2011-0KA10
FabrikantSiemens
63,54 €
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RS-stocknr. 122-0732
FabrikantnummerMPW18-3-D063
FabrikantWEG
53,70 €
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4 → 6.3 A 3 - 100 kA/415V Screw 690 V Manual 90mm 45mm 77mm 44.8 x 77 x 97 mm Motors MPW18
RS-stocknr. 608-8309
FabrikantnummerGV2L08
73,33 €
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2.5 → 4 A, 4 → 6 A 3P TeSys 4 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2L
RS-stocknr. 211-4482
FabrikantnummerPKZM0-20
FabrikantEaton
93,06 €
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16 → 20 A 3P - 40 kA Screw 690 V ac - 93mm 45mm 76mm 93 x 45 x 76 mm - PKZM 0
RS-stocknr. 797-5572
FabrikantnummerEMS-ROS-T-2.4-24VDC
FabrikantEaton
156,00 €
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0.18 → 2.4 A 1 ATEX 3 A Screw 24 V dc, 550 V ac Manual 123.5mm 157mm 30mm 123.5 x 157 x 30 mm - -
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Fabrikantnummer140M-C2E-B63
FabrikantAllen Bradley
78,50 €
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4 → 6.3 A 3P - 100 kA - 415 V - 90mm 45mm 74mm 90 x 45 x 74 mm - 140M
RS-stocknr. 711-6464
FabrikantnummerMS132-2.5
FabrikantABB
78,00 €
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Aantal stuks
- 3P - - - 690 V ac - - - - - - MS132
RS-stocknr. 619-4735
FabrikantnummerPKZM4-50
FabrikantEaton
240,92 €
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40 → 50 A 3P - 60 kA Screw 690 V ac - 140mm 55mm 160mm 140 x 55 x 160 mm - PKZM 4
RS-stocknr. 351-5331
Fabrikantnummer140M-C2E-B10
FabrikantAllen Bradley
73,70 €
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0.63 → 1 A 3P - 100 kA - 415 V - 90mm 45mm 74mm 90 x 45 x 74 mm - 140M
RS-stocknr. 818-104
FabrikantnummerPKZM0-0,16
FabrikantEaton
55,52 €
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0.1 → 0.16 A 3P - 60 kA Screw 690 V ac - 93mm 45mm 76mm 93 x 45 x 76 mm - PKZM 0
RS-stocknr. 608-8359
FabrikantnummerGV2L22
121,00 €
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16 → 24 A 3P TeSys 4 kA Screw 690 V - 89mm 44.5mm 97mm 89 x 44.5 x 97 mm - GV2L
RS-stocknr. 818-744
FabrikantnummerPKZM0-10
FabrikantEaton
86,35 €
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6.3 → 10 A 3P - 60 kA Screw 690 V ac - 93mm 45mm 76mm 93 x 45 x 76 mm - PKZM 0
RS-stocknr. 395-0346
FabrikantnummerGV2ME01
53,42 €
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0.1 → 0.16 A 3P TeSys - Screw 690 V - 89mm 44.5mm 78.2mm 89 x 44.5 x 78.2 mm - GV2M
RS-stocknr. 619-4713
FabrikantnummerPKZM4-63
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254,76 €
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55 → 65 A 3P - 60 kA Screw 690 V ac - 140mm 55mm 160mm 140 x 55 x 160 mm - PKZM 4
RS-stocknr. 492-1743
FabrikantnummerPKZM01-16
FabrikantEaton
76,02 €
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10 → 16 A 3P - 60 kA Screw 690 V ac - 93mm 45mm 90.5mm 93 x 45 x 90.5 mm - PKZM 01
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